Preparation of smooth surface TiO2 photoanode for high energy conversion efficiency in dye-sensitized solar cells

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題名:	Preparation of smooth surface TiO2 photoanode for high energy conversion efficiency in dye-sensitized solar cells
作者:	李文仁;Li, Chung-Yen;Wang, Hsiue-Hsyan;Su, Chaochin;Chen, Huei-Siou;Kathirvel, Sasipriya;Li, Wen-Ren
貢獻者:	理學院化學學系
關鍵詞:	Adsorption;Atoms & subatomic particles;Cellulose;Efficiency;Ethanol;Nanomaterials;Nanoparticles;Photovoltaic cells;Solar energy;Titanium
日期:	2013-06-11
上傳時間:	2026-04-21 14:09:30 (UTC+8)
出版者:	Hindawi Publishing Corporation;Cairo, Egypt: Hindawi Publishing Corporation
摘要:	摘要： Dye-sensitized solar cells (DSSCs) based on a TiO2 photoanode have been considered as an alternative source in the field of renewable energy resources. In DSSCs, photoanode plays a key role to achieve excellent photo-to-electric conversion efficiency. The surface morphology, surface area, TiO2 crystal phase, and the dispersion of TiO2 nanoparticles are the most important factors influencing the properties of a photoanode. The smooth TiO2 surface morphology of the photoanode indicates closely packed arrangement of TiO2 particles which enhance the light harvesting efficiency of the cell. In this paper, a smooth TiO2 photoanode has been successfully prepared using a well-dispersed anatase TiO2 nanosol via a simple hydrothermal process. The above TiO2 photoanode was then compared with the photoanode made from commercial TiO2 nanoparticle pastes. The morphological and structural analyses of both the aforementioned photoanodes were comprehensively characterized by scanning electron microscopy and X-ray diffraction analysis. The DSSC fabricated by using a-TiO2 nanosol-based photoelectrode exhibited an overall light conversion efficiency of 7.20% and a short-circuit current density of 13.34 mA cm−2, which was significantly higher than those of the DSSCs with the TiO2 nanoparticles-based electrodes. 出版者： Cairo, Egypt: Hindawi Publishing Corporation 出版日期： 2013-01-01 出處： Journal of nanomaterials, 2013-01, Vol.2013 (2013), p.1-8 資源來源： Chinese Electronic Periodical Services (CEPS) 版權： Copyright © 2013 Sasipriya Kathirvel et al. 版權： Copyright © 2013 Sasipriya Kathirvel et al. Sasipriya Kathirvel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 識別號： ISSN: 1687-4110 識別號： ISSN: 1687-4129 識別號： EISSN: 1687-4129 識別號： DOI: 10.1155/2013/367510
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